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lomonoyan
Questions (11)
Heat from burning a fuel is absorbed by a copper calorimeter. The calorimeter has a mass of 81.34 g and contains 200.0 g of
1 answer
1,146 views
A sample of acetone having a mass of 1.920 g undergoes complete combustion in an insulated calorimeter holding 400 mL of water.
1 answer
810 views
A reaction in a calorimeter containing 80.0 g of water at 20 degrees Celsius causes the temperature to fall by 1.5 degrees. what
1 answer
937 views
starting with the equation for resistors in parallel, prove that for two resistors R1 and R2, the equivalent total resistance
1 answer
494 views
a worker on the roof of a building that is under construction dropped a 0.125 kg wrench over the edge. another workman on the
1 answer
1,769 views
a worker on the roof of a building that is under construction dropped a 0.125 kg wrench over the edge. another workman on the
1 answer
842 views
62kg person in an elevator is moving up at a constant speed of 4.0m/s for 5.0s
a) calculate the work done by the normal force on
1 answer
6,295 views
a lawnmower with a mass of 12 kg is being pushed by a force of 150n horizontally and 40 n down. if the kinetic coefficient of
1 answer
1,050 views
I want to know the reasoning behind each answer as well cause I have the answers, I want to know why and how to do the answers
1 answer
918 views
A train moving at a constant speed of 100km/h travels east for 40min, then 30o east of north for 20 min, and finally west for
1 answer
2,031 views
An airplane pilot checks her instruments and finds that the air speed of the plane is 325 km/h. the instruments show that the
1 answer
2,316 views
Answers (1)
a worker on the roof of a building that is under construction dropped a 0.125 kg wrench over the edge. another workman on the 8th floor saw the wrench go by and determined that its speed at that level was 33.1 m/s. the first floor of the building is 12.0m
